Description: TRAPR (Torpedo Recognition by Active and Passive Reconnaissance) DCL (Detection, Classification, and Localization) is a torpedo defense system developed by Ultra Electronics for use by the US Navy's surface ships. Compared to other torpedo defense systems TRAPR DCL features an active sonar that searches out for incoming torpedoes and three defense mechanisms against torpedo threats. The system also provides fire control information in support of anti-torpedo torpedoes launch.

TRAPR DCL underwent sea trials onboard USS Cleveland (LPD 7) in April 2006 and USS Bonhomme Richard (LHD 6) in September 2006. During the September trial more than 25 disarmed torpedoes were volleyed to LHD 6 while she was maneuvering at high-speed.